Teacher Resources

Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals.

Exercises from Illustrative MathematicsA set of exercises, commentary, and solutions. For this unit, choose:

G-CO Midpoints of the Sides of a ParalellogramG-CO Is this a parallelogram?G-CO Parallelograms and Translations